Dear All,
I have exported data of one user an importing into another schema at another server.
when i am trying to imoport it is working fine for quite no of imports into tables, but after some time it starts giving me below mention error...

Dear all,
Thanks for your update.
Both source and target database are of same version and i have copied the dmp file in my server (source) sharing folder and from their i have copied to my target system ( where i am trying to import ).
Actually i am trying to create the development server in my company for doing testing for which i was trining to export ( which was successfull) and later importing ( which i am getting problem).
Need your immediate help in this regard.
Thanks in advance.

Since Oracle complains LOUDLY about problems during import, I can only conclude that target is different from source.
You have provided NO details to guess at what specifically might be causing the errors

Dear,
Thanks for your immediate response.
Dear, we at the end of every month we will take the export of our live database and import it into our development server.
this i was doing many times
But this time i am getting this kind of error. I am getting afraid of any data corruption in Live database.
Waiting for your immediate inputs.
Thanks in adwance.